Outcomes of Routine Intensity Modulated Radiation Therapy Quality Assurance in a Large Head and Neck Cancer Center

2017 ◽  
Vol 98 (3) ◽  
pp. 541-546 ◽  
Author(s):  
Isuru Amarasena ◽  
Alan Herschtal ◽  
Ieta D'Costa ◽  
Tsien Fua ◽  
Albert Tiong ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Radiation Therapy ◽  
Head And Neck Cancer ◽  
Head And Neck ◽  
Intensity Modulated Radiation Therapy ◽  
Cancer Center ◽  
Intensity Modulated ◽  
Large Head ◽  
Therapy Quality ◽  
Radiation Therapy Quality Assurance

Dosimetric verification and quality assurance for intensity-modulated radiation therapy using Gafchromic® EBT3 film

2017 ◽  
Vol 17 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Khalid Iqbal ◽  
Muhammad Mazhar Iqbal ◽  
Muhammad Akram ◽  
Saima Altaf ◽  
Saeed Ahmad Buzdar
Keyword(s):  
Quality Assurance ◽  
Radiation Therapy ◽  
Intensity Modulated Radiation Therapy ◽  
Imrt Qa ◽  
Ion Chamber ◽  
Intensity Modulated ◽  
Dosimetric Verification ◽  
Therapy Quality ◽  
Dosimetric Assessment ◽  
Radiation Therapy Quality Assurance

AbstractPurposeThis study aimed to examine the dosimetric properties of Gafchromic® EBT3 film and intensity-modulated radiation therapy quality assurance (IMRT QA).Materials and methodsBeams characteristics dosimetric properties and 20 IMRT plans were created and irradiated on Varian dual-energy DHX-S Linac for 6 and 15 MV energies. EBT3 films were analysed using ‘film Pro QA 2014’ software.ResultsThe dosimetric comparison of EBT3 film (for red channel dosimetry) and ionisation ion chamber measurement showed that average deviations of symmetry, flatness, central axis, penumbra (left) and penumbra (right) of dose profile were 0·18, 1·34, 0·49%, 3·68 and 3·61 mm for 6 MV and 0·10, 1·3, 0·45, 2·65 and 2·71 mm for 15 MV, respectively. The blue and green channels dosimetry showed greater dose deviation as compared with red channel. IMRT QA verification plan complied about 95% at all different criteria. Reproducibility, stability and face orientation of film were within 1·4% for red channel.ConclusionsThe results advocate that the film can be used not only for dosimetric assessment but also as a reliable IMRT QA tool.

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